Description

Calcium Bis[5-Hydroxy-6-(Naphthylazo)Naphthalenesulphonate] is a high-purity, organometallic azo dye complex valued for its excellent colorant properties and stability. This compound is critical for industries requiring precise and durable coloration in specialized formulations. It is primarily utilized by manufacturers in the pigment, specialty coatings, and advanced materials sectors for its consistent performance and quality.

Application

• Primary Pigment for Industrial Coatings: Used in high-performance paints, automotive finishes, and protective coatings requiring lightfastness and chemical resistance.
• Coloration of Plastics and Polymers: Imparts stable color to engineering plastics, masterbatches, and synthetic fibers during compounding and extrusion processes.
• Specialty Ink Formulation: A key component in the production of inks for security printing, packaging, and other applications demanding high color strength and durability.
• Functional Additive for Advanced Materials: Employed in the research and development of functional materials where its specific molecular structure contributes to desired optical or electronic properties.
• Laboratory Reagent and Analytical Standard: Serves as a reference material in analytical chemistry for method development and quality control in colorant analysis.

Basic Information

Product Name	Calcium Bis[5-Hydroxy-6-(Naphthylazo)Naphthalenesulphonate]
CAS No.	6373-10-0
Molecular Formula	C40H24CaN4O10S2
Molecular Weight	824.88 g/mol
Synonyms	Calcium 5-Hydroxy-6-(naphthylazo)naphthalenesulfonate; Calcium 6-(Phenylazo)-5-hydroxynaphthalene-2-sulfonate; C.I. Pigment Red 57:1 (Calcium Lake); Lithol Rubine BCA; Permanent Carmine FBB; Naphthol Red; Calcium 4-[(2-Hydroxy-1-naphthyl)azo]-3-nitrobenzenesulfonate (related structure); Calcium Lithol Rubine
EINECS	228-921-5

Quality Control

Our production of Calcium Bis[5-Hydroxy-6-(Naphthylazo)Naphthalenesulphonate] adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive analytical testing, including assay, identification, and impurity profiling. A Certificate of Analysis (COA) detailing purity, physical characteristics, and test results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance and flow characteristics.

Specification

Item	Specification
Appearance	Red to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water-soluble Matter	≤ 1.0%
pH (Aqueous Suspension)	6.0 - 8.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.